<template>
    <div class="login_zujian">
        <div class="login_box">
            <!-- 头像区 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区 -->
            <el-form ref="loginformref" :model="loginform" :rules="loginrules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                    <el-form-item prop="username">
                        <el-input v-model="loginform.username" prefix-icon="iconfont icon-ziyuanxhdpi"></el-input>
                    </el-form-item>
                <!-- 密码 -->
                    <el-form-item prop="password">
                        <el-input type="password" v-model="loginform.password" prefix-icon="iconfont icon-mima"></el-input>
                    </el-form-item>
                    <!-- 按钮区域 -->
                    <el-form-item class="bins">
                        <el-button type="primary" @click="login">登录</el-button>
                        <el-button type="info" @click="resetloginform">重置</el-button>
                    </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //这是登录表单的数据绑定对象
            loginform:{
                username:'admin',
                password:'admin123'
            },
            // 这里是表单验证规则
            loginrules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    
    methods:{
        // 重置登录表单
        resetloginform(){
            // console.log(this);
            this.$refs.loginformref.resetFields();
        },
        login(){
            
            this.$refs.loginformref.validate(async validate => {
                // console.log(validate);
                if(!validate){return;}
                // const res = await this.$http.post("login",this.loginform);
                // console.log(res);

                this.$http.post('login',this.loginform).then( res => {
                    // console.log(res.data);
                    const arr = res.data;
                    if(arr.meta.status !== 200 ){return this.$msg.error('登录失败');}
                    // console.log('登录成功');
                    this.$msg.success('登录成功');
                    // 登录成功保存token到服务端
                    window.sessionStorage.setItem('token',arr.data.token);
                    this.$router.push('/home');
                });
                
            });
        }
    }
}
</script>

<style Lang="less" scoped>
    .login_zujian{
        width: 100%;
        height: 100%;
        background-color: #2b4b6b;
    }
    .login_box{
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
        
    }
    .login_box .avatar_box{
        width: 130px;
        height: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
    }
    .avatar_box img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
    .bins{
        display: flex;
        justify-content: flex-end;
    }
    .login_box .login_form{
        position: absolute;
        bottom: 0%;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }
</style>